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The Chernobyl disaster was a nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in Ukraine (officially Ukrainian SSR), which was under the direct jurisdiction of the central Moscow's authorities. An explosion and fire released large quantities of radioactive contamination into the atmosphere, which spread over much of Western USSR and Europe. It is considered the worst nuclear power plant accident in history, and is one of only two classified as a level 7 event on the International Nuclear Event Scale (the other being the Fukushima Daiichi nuclear disaster).[1] The battle to contain the contamination and avert a greater catastrophe ultimately involved over 500,000 workers and cost an estimated 18 billion rubles, crippling the Soviet economy. By: H.Ahmed
See link below for a good article on Chernobyl.
Reason number 1 (before) is that you could contaminate your samples if you have foreign material on your hands. Reason number 2 (after) is that you could spread or ingest dangerous chemicals or substances that you have handled in the lab.
chernobyl virus
1986
i dont know try some where else
Chernobyl "Contamination from the Chernobyl disaster was not evenly spread across the surrounding countryside, but scattered irregularly depending on weather conditions. Reports from Soviet and Western scientists indicate that Belarus received about 60% of the contamination that fell on the former Soviet Union." -Wikipedia
About 616 miles to Moscow from Chernobyl.
Given the topic this question is listed under, I think you might be confusing Chernobyl with the bombings of the Japanese cities of Hiroshima and Nagasaki at the end of WWII. Chernobyl was a nuclear accident at a plant in the Ukraine which took place on April 26, 1986.
About 988.8 KM :)
Contamination
Direct contact, contamination and exchange of fluids.
Air contamination working hard
Polio is a virus that is spread when fecal contamination is ingested.
As far as i know, Only God knows. :)
cross-contamination
Cross-contamination